ACETYLATION AND NITROSATION OF TISSUE AMINES IN HISTOCHEMISTRY
نویسندگان
چکیده
منابع مشابه
The enzymatic acetylation of amines.
The enzymatic acetylation of aromatic amines (1, Z), choline (3), glucosamine (4), and histamine (5) has been shown to require coenzyme A (CoA) ; recent studies (6) have demonstrated that the thio ester, acetyl CoA, can serve as the acetyl donor in the acetylation reaction. However, more detailed studies on the properties of the acetylating enzyme were made difficult by the absence of a suitabl...
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An acetic anhydride pyridine mixture acetylates hydroxyl groups in tissue sections. The acetyl groups can be removed from tissue sections by weak alkali. Sections acetylated by acetic anhydride pyridine no longer produce aldehydes after oxidation by periodic acid. Acetylated sections subjected to weak alkali regain the ability to produce aldehydes after oxidation by periodic acid. Acetylation o...
متن کاملpostnatal studies of bats (pipistrellus kuhlii and miniopterus schreibersii) & histomorphology and histochemistry studies of organs and diseases of (neurergus microspilotus and n. kaiseri)
1. to determine whether difference in birth body mass influenced growth performance in pipistrellus kuhlii we studied a total of 12 captive-born neonates. bats were assigned to two body mass groups: light birth body mass (lbw: 0.89 ± 0.05, n=8) and heavy birth body mass (hbw: 1.35 ± 0.08, n=4). heavier body mass at birth was associated with rapid postnatal growth (body mass and forearm length) ...
extraction and acetylation of purified trypsin from bovin pancreas and study of some its physico-chemical properties
آنزیم تریپسین در شرایط قلیایی ناپایدار می باشد .و فعالیت پروتئولیتیکی تریپسین منجربه خود هضمی آن در جایگاههای خاصی می گردد. بنابر این آنزیمی با ناپایداری بالا محسوب میگردد. در سالهای اخیر موفق شدند که با ایجاد تغیرات شیمیایی با اضافه کردن فلزات خاص ، کلسیم و یا عمل استیلاسیون منجر به افزایش پایداری آنزیم تریپسین گردند. مطالعات در حال حاضر نشان می دهد که تریپسین استیله شده فعالیت آنزیمی خود را ...
15 صفحه اولThe Effect of N-nitrosation of Secondary Amines in Vitro by Fermented Celery Powder
Abstract:N-nitrosaminesis a kind of poison which can induce cancer. Nitrite can react withsecondary amines to form N-nitrosamines in meat production. The objective of this experiment was to study N-nitrosamines formation ofthree kinds offermentationcelery powder (FCP506, FCP504, and FCP-homemade) and nitritein vitro nitrosation reaction system bydifferent pH, temperature, and the ratio of the s...
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ژورنال
عنوان ژورنال: Journal of Histochemistry & Cytochemistry
سال: 1958
ISSN: 0022-1554,1551-5044
DOI: 10.1177/6.5.352